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参数资料
| 型号： | LTC3109EGN#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 0.026 A SWITCHING REGULATOR, PDSO20 |
| 封装： | 0.150 INCH, LEAD FREE, PLASTIC, SSOP-20 |
| 文件页数： | 21/24页 |
| 文件大小： | 329K |
| 代理商： | LTC3109EGN#PBF |
LTC3109
3109f
LDO Step Load Response
Enable Input and VOUT2
Running on Storage Capacitor
pin FuncTions (QFN/SSOP)
VSTORE (Pin 1/Pin 3): Output for the Storage Capacitor or
Battery. A large storage capacitor may be connected from
this pin to GND for powering the system in the event the
input voltage is lost. It will be charged up to the maximum
VAUX clamp voltage. If not used, this pin should be left
open or tied to VAUX.
VAUX (Pin 2/Pin 4): Output of the Internal Rectifier Cir-
cuit and VCC for the IC. Bypass VAUX with at least 1F of
capacitance to ground. An active shunt regulator clamps
VAUX to 5.25V (typical).
VOUT (Pin 3/Pin 5): Main Output of the Converter. The
voltage at this pin is regulated to the voltage selected by
VS1 and VS2 (see Table 1). Connect this pin to a reservoir
capacitor or to a rechargeable battery. Any high current
pulse loads must be fed by the reservoir capacitor on
this pin.
VOUT2 (Pin 4/ Pin 6): Switched Output of the Converter.
Connect this pin to a switched load. This output is open
until VOUT_EN is driven high, then it is connected to VOUT
through a 1Ω PMOS switch. If not used, this pin should
be left open or tied to VOUT.
VOUT2_EN (Pin 5/Pin 7): Enable Input for VOUT2. VOUT2
will be enabled when this pin is driven high. There is an
internal 5M pull-down resistor on this pin. If not used,
this pin can be left open or grounded.
PGOOD (Pin 6/Pin 8): Power Good Output. When VOUT
is within 7.5% of its programmed value, this pin will be
pulled up to the LDO voltage through a 1M resistor. If
VOUT drops 9% below its programmed value PGOOD will
go low. This pin can sink up to 100A.
VLDO (Pin 7/Pin 9): Output of the 2.2V LDO. Connect a
2.2F or larger ceramic capacitor from this pin to GND.
If not used, this pin should be tied to VAUX.
GND (Pins 8, 11, 16, Exposed Pad Pin 21/Pins 10, 13,
18):GroundPins.Connectthesepinsdirectlytotheground
plane.Theexposedpadservesasagroundconnectionand
as a means of conducting heat away from the die.
VS2 (Pin 20/Pin 2): VOUT Select Pin 2. Connect this
pin to ground or VAUX to program the output voltage
(see Table 1).
VS1 (Pin 19/Pin 1): VOUT Select Pin 1. Connect this
pin to ground or VAUX to program the output voltage
(see Table 1).
Table 1. Regulated Output Voltage Using Pins VS1 and VS2
VS2
VS1
VOUT
GND
2.35V
GND
VAUX
3.3V
VAUX
GND
4.1V
VAUX
5.0V
Typical perForMance characTerisTics T
A = 25°C, unless otherwise noted.
VLDO
20mV/DIV
ILDO
5mA/DIV
200s/DIV
3109 G15
0mA TO 3mA LOAD STEP
CLDO = 2.2F
1ms/DIV
3109 G16
CH2
VOUT2
1V/DIV
CH1
VOUT2_EN
1V/DIV
10mA LOAD ON VOUT2
COUT = 220F
5SEC/DIV
3109 G17
CH2, VOUT
1V/DIV
CH1, VIN
50mV/DIV
CH3
VSTORE
1V/DIV
CH4, VLDO
1V/DIV
CSTORE = 470F
VOUT LOAD = 100A
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3109EGN-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Auto-Polarity, Ultralow Voltage Step-Up Converter and Power Manager |
| LTC3109EUF#PBF | 功能描述:IC BOOST CONVERTER PMU 20QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 标准包装:1 系列:- 应用:手持/移动设备 电流 - 电源:- 电源电压:3 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-WFDFN 裸露焊盘 供应商设备封装:14-LLP-EP（4x4） 包装:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名称:LP3905SD-30DKR |
| LTC3109EUF#TRPBF | 功能描述:IC BOOST CONVERTER PMU 20QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 标准包装:1 系列:- 应用:手持/移动设备 电流 - 电源:- 电源电压:3 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-WFDFN 裸露焊盘 供应商设备封装:14-LLP-EP（4x4） 包装:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名称:LP3905SD-30DKR |
| LTC3109EUF-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Auto-Polarity, Ultralow Voltage Step-Up Converter and Power Manager |
| LTC3109EUF-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Auto-Polarity, Ultralow Voltage Step-Up Converter and Power Manager |
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